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Information Junky
Join Date: Mar 2001
Location: an island, upper left coast, USA
Posts: 73,167
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Trains use Rails to guide the engine and cars...
We have self driving cars that use processor power to guide the car over various roadways. (no steel rails needed) and because the tech is so good, they can travel at 200mph too.
Seriously, the bullet train is nothing but a graft program for politicians.
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Everyone you meet knows something you don't. - - - and a whole bunch of crap that is wrong.
Disclaimer: the above was 2¢ worth.
More information is available as my professional opinion, which is provided for an exorbitant fee. 
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